Printing appliance



Nov. 29, 1927.

W. T. MOGINNIS PRINTING APPLIANCE Filed March 12. 1925' INVERTER.-

Patented Nov.` Z9, 1927.

Unire-D STATES Wintraiyr @McGinnis or rnnvonvILLn, rLLI-Nors.

PRINTING APPLIANCE. i

Application led March 12, 19,726. Serial No. 94,1756.

Base members to which the top or typey plates are connected have been constructet heretofore so as to coactwith a complementary member cast on the top or typeplate which prevented movement of the top or type-plate ion the base members in two dir rections only; i. e. ytheir separation bodily and sliding movement in one direction. Such an assembly, when thebase members and top or type-plates are held in a'cliase requires the introduction of slugs together with the ordinary and regular furniture fillers to hold the top plates securely and against movement in directions not provided for by the locking means connecting the base members and the top or type-plates. `@wing to thetop or `type-plates being cast very shallow, the usel of the slugs, unless 'very carefully placed are type high and morer or less smear the printed surface which becomes verf objectionable, especially when cuts of persons or things appear on the cast surface of the top ,or type-plates.

My improved locking means between the base members and the top Vor type-plate obviates any and all of these objections and insures a suflicientsecuring` of the top or type-plate to the base or base members against movement in all directions with relation to each other and simplies the securing of the base member or members to the top or type-plates within achase.

That the invention may be more fully understood, reference is had to the accompanying drawing` forming a part of the pres-y ent description and illustrating a preferred embodiment of the invention, in which- Fig. l is a top plan view showing the manner and form of locking a top or type-plate within a chase without the necessity of using slugs; Y

Fig. 2 is a top plan view of a top or typeplate and base member or members as they appear when locked togethenthe top or typeplatebroken away and .dotted and full lines 'showing my improved Vlocking means;

F ig. 3 is a vcross section in elevation, as .the same would appear if taken on the line 8 3, Figure 2.' n y Fig. 4l is a perspective view of a base member 1:constructed according to lmy invention, and

is a perspective view broken in two showing a top or type-plate cast, according to my invention.

. Like characters of reference denote corresponding parts throughout the figures.

in Figure l have illustrated atop or type plate l locked to a base member or members therebeneath, not shown, and ,theseV elements locked in a cliaseA through and by means of the usual and ordinary furniture fillers aand and the usual l and'well Vknown quoins e. The chase, furniture fillers and quoins form no part of .the present invent-ion. n

The top or type-plate l is formed vin the usual manner with type face or other material, such as figures, portraits and the like, not shown, and with the spaced longitudinally disposed ribs or webs 201i the underneath side thereof which form rests for the top or type-plate on a b ase member or members 3, also cast on the underneath side Aof the top or type-plates l are one or more ribs or webs 4, somewhat like the ribs .or webs 2, .except thatv they are preferably wedge like in cross section which are adaptedV to coact with wedge surfaces 5 and .wedge like ribs or webs 6 on the base member or members 3.

VThe ribs or webs 4 and the wedge surfaces 5 and the ribs or webs 6 provide complementary locking members between the top or type-plate and base member or members which are adapted to have a sliding looking relation and prevent bodily separation of the top or type-plate from the base member or members and prevent slidable separation thereof in one direction, preferably crosswise between such parts.

Thus far the structure of the top or type- 'plates and the base member or members is substantially what is and has been used VIt being understood that the ribs or webs 2 and 4 on the top or type-plates extend, in a direc tion what I shall choose to designate, longie tudinally of the top or type-plates and naturally the wedge surfaces 5 and ribs or webs 6 on the base member or members are disposed inv a like direction thereon, regardless of their size. This is evidenced by an examination of Figures 2, 3 and 4.

Referring now to my improved locking means between the base member or members and top or type-plates, I construct the base members,` which are usually placed coincident with the opposite ends of a topfor typevplate and coinciding with preferably corresponding corners at opposite ends thereof with an angularly disposed lug 7 of prefer ably triangular shape with its inside edge or face wedge like, as at 8, see Figure 4. The top or type-plates l are provided on their underneath side and at preferably corresponding corners at each end, see Figure 5, with preferably triangularly formed recesses or seats 9, the inside walls of which are tapered or wedge shaped, as at l0. These recesses or seats 9 in size and shape conform substantially to the lugs 7 on the base member or members and in relation to which they overlie when the base members and top or type-plates are in locked relation; such locl ing relation being brought about by the sliding relation between the wedge like faces 8 of the lugs 7 with the tapered or wedge 'like walls 10 of the recesses or seats 9 in the top or type-plates. To bring the complementary locking parts of the base members and a top vor type-plate into locking relation, the base members at the opposite ends for the top or type-plate are moved into position towards the-ends of each end of said top or type-plate. By examining Figure 4, it will be observed that the lugs 7 are so placed on the base members, that their locking faces'8 are opposite 5, although inclined from, and face the wedge shaped locking faces of the ribs 'or webs 6 thereon. It should now be obvious that with such disposition of the locking members on a base member that when a top or type-plate is locked thereto, said plate is held between base members at opposite ends against longitudinal movement in either direction; against sidewise movement in either direction and against bodily separation from and towards each other. It is being assumed, of course, the statement is predicated on the locked base members` and a top or type-plate being i.'

held within a chase, somewhat as shown in Figure l.

What I claim is l. In a printing appliance, a base member for a top or type-plate comprising a unitary structure having locking members on its acting face one of which has its engaging face bearing obliquely to the other and adapted 4for locking relation with complementary parts on such a top Vor type-plate to hold the latter against sliding movement in longitudinal and transverse directions and against bodily movement toward and from said locking members.

2. In a printing appliance, in combination,

a top or type-plate provided with spaced parallel lockingr ribsy extending between opposite edges and with locking surfaces at oppositely disposed corners of one edge of said plate, base members for the locking surface ends of said top or type-plate, each member provided with locking ribs complementary to the locking rib of said'i-top or Y type-plate and with spaced'locking lugs complementary to the corner locking surfaces of said top ortype' plate.

3. In a printing appliance, a topor typeplate provided on its underside with a wedge shaped lockingsrib extending between opposite edges and with recesses at certain of its 

